K29300 High Temperature Evaporation Loss Test Apparatus


Test Method
Evaluates the potential for evaporation loss of lubricant components in high temperature service. A controlled flow of heated air is passed over the sample for a specified period. Evaporation loss is measured by the change in sample weight during the test. The Evaporation Loss test can also be used for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils (ASTM D2878). Similar to the ASTM D972 Evaporation Loss test, the temperature range is extended for evaporation loss testing to 600F (316C).

Features and Benefits
• Conforms to ASTM D2595 specifications

• Microprocessor temperature control with digital display and overtemperature cut-off

• Microprocessor programmable high accuracy temperature control


K29300 High Temperature Evaporation Loss Test Apparatus
Performs evaporation loss tests on lubricating greases at temperatures of up to 600F (316C). Maintains sample temperature within 0.3F while passing heated air over the sample surface at a controlled flow rate. Consists of evaporation cells and aluminum block oven with controls for sample temperature, air temperature and air flow rate. Evaporation cells include grease sample cup, head, eduction tube, cover and thermocouple tube. Aluminum block oven provides efficient response and safe operation at high temperatures. Microprocessor temperature control has C/F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit when bath temperature exceeds a programmed cut-off point. Microprocessor PID control provides quick temperature stabilization without overshoot and the bath is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Dual LED displays provide actual and setpoint temperature values in C/F format. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Separate air preheater controls and flowmeters for each cell permit accurate control of heated air flow to sample surface. Order accessory Digital Thermometer (Cat. No. K29310) to monitor exit air temperature and ASTM 3F or 3C Thermometer for block (sample) temperature. Accessory oil sample cup (Cat. No. K29530) converts evaporation cell for lubricating oil samples.

Conforms to: ASTM D2595, D2878*
*with accessory oil sample cup installed

Capacity: 2 samples

Temperature Range: 200 to 600F (93 to 316C)

Sample Temperature Control:
Type: microprocessor digital control

Exit Air Temperature Control: Two 0-500W variable control heaters and type IC thermocouples. (Order K29310 Digital Thermometer separately.)

Air Flow Control: Two externally mounted flowmeters maintaining 2L/min flow
at standard temperature and pressure.

Electrical Requirements
220-240V 50/60Hz, Single Phase, 10.4A

Included Accessories
Evaporation Cell Assemblies with grease sample cups (2)
Type IC Thermocouples (2)

Dimensions lxwxh,in.(cm)
25x16x17 (64x41x43)
Net Weight: 175 lbs (79.4kg)

Shipping Information:
Shipping Weight: 224 lbs (101.6kg)
Dimensions: 10.4 Cu. ft

Ordering Information



Product Description

Electrical Requirements


High Temperature Evaporation Loss Test Apparatus

220-240V 50/60Hz



Catalog Number

Product Description


Digital Thermometer, 115V 50/60Hz
Microprocessor based digital thermocouple thermometer with ten channel input. Monitors Type IC Thermocouples from evaporation cells in K29300 Evaporation Loss Tester. Use together with preheater controls in Model K29300 to maintain air temperature within 1.1C (2F) per ASTM specifications


Digital Thermometer, 220-240V 50/60Hz


ASTM 3F Thermometer
Range: 20 to 760F


ASTM 3C Thermometer
Range: -5 to +400C


Oil Sample Cup with Hood


Grease Sample Cup with Hood


When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.